Malicious PDF — malware analysis report

Static analysis result for SHA-256 3ab929f9c4b96c46…

MALICIOUS

PDF

70.8 KB Created: 2021-02-22 02:10:00 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: a1456c8c4cc26488311c948731f2989e SHA-1: 138b4dedbe43df64ccf1678e305fdcd3668b6614 SHA-256: 3ab929f9c4b96c4671789e7d8326999570d0fd2dc0bd22d5cc5fb5f345218874
196 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://maypoin.ru/wix?keyword=stainless+steel+wheatgrass+hand+juicer PDF link annotation
    • https://tapebosipufadiz.weebly.com/uploads/1/3/4/3/134366988/2cb64d678.pdfIn PDF document text
    • https://cdn.sqhk.co/gudopokobipa/jSYjdih/73161366410.pdfIn PDF document text
    • https://cdn.sqhk.co/kibutonap/ghjdGij/86614360850.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/widuxade/wrong_turn_5_tamil_dubbed_movie.pdfIn PDF document text
    • https://s3.amazonaws.com/ropidadegaxut/java_iso_8601_date_format.pdfIn PDF document text
    • https://s3.amazonaws.com/wujafivabipo/4134295341.pdfIn PDF document text
    • http://vefapiba.epizy.com/barredora_manual_marca_karcher.pdfIn PDF document text
    • http://ziwivalotezeti.rf.gd/powerdirector_15_crack_patch.pdfIn PDF document text
    • https://s3.amazonaws.com/mutirexa/246159814.pdfIn PDF document text
    • https://s3.amazonaws.com/gateme/donikes.pdfIn PDF document text
    • https://s3.amazonaws.com/sorapobuk/bootstrap_datepicker_set_date_format.pdfIn PDF document text
    • https://s3.amazonaws.com/xarojapi/blackheart_haven_veteran_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/wutisigila/vigozegulizunikowok.pdfIn PDF document text
    • https://s3.amazonaws.com/piwanisaj/fokawapob.pdfIn PDF document text
    • http://xepadegi.epizy.com/workplace_satisfaction_survey_template.pdfIn PDF document text
    • https://s3.amazonaws.com/wanasuvedigo/baahubali_2_songs_in_masstamilan.pdfIn PDF document text
    • https://s3.amazonaws.com/woxorojero/linear_access_base_2000_software.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d88c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD88C 5472 bytes
SHA-256: 576bb30704dbfc67a790fc6d90a56c43756eb09f1b6dc9f01a0efae549953f9e
font_01_sfnt_off0000eb30.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEB30 10248 bytes
SHA-256: d93452ef3d271076a4062bcbd572b8a2d4b193e08b076bf9f6bca64aedb6ae0f

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